<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
	</head>
	<body>
		<div id="app">
			<p v-if="score>=90">优秀</p>
			<p v-else-if="score>=70">良好</p>
			<p v-else-if="score>=60">及格</p>
			<p v-else>不及格</p>
		</div>

		<script>
			var app = Vue.createApp({
				data() {
					return {
						score: 90
					}
				}
			});
			var vm = app.mount("#app")
		</script>

	</body>
</html>